10TH STATE BOARD ONE MARK - CHAPTER 6- BY METRO KARUNAGARAN

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B) 1

D) 0

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A) 9

B) 7

C) 5

D) 3

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A) 2a

B) 3a

C) 0

D) 2ab

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A) 25

C) 5

D) 1

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A) 0

B) 1

C) 2

D) -1

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10.

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11. The electric pole subtends an angle of 30° at a point on the same level as its foot. At
a second point ‘b’ metres above the first, the depression of the foot of the pole is 60°.
The height of the pole (in metres) is equal to

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12. A tower is 60 m heigh. Its shadow is x metres shorter when the sun’s altitude is 45°
than when it has been 30°, then x is equal to

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A) 41.92 m

B) 43.92 m

C) 43 m

D) 45.6 m

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13. The angle of depression of the top and bottom of 20 m tall building from the top of
a multistoried building are 30° and 60° respectively. The height of the multistoried
building and the distance between two buildings (in metres) is

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C) 20, 10

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14. Two persons are standing ‘x’ metres apart from each other and the height of the first
person is double that of the other. If from the middle point of the line joining their
feet an observer finds the angular elevations of their tops to be complementary, then
the height of the shorter person (in metres) is

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D) 2x

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15.

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D) none of these

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